As the investigation continues, law enforcement have asked her loved ones to resume their day-to-day lives.

Mollie's brothers, Jake and Scott, went back to college last week. Their dad said it was a difficult move-in because they passed by the place where Mollie would be staying for her sophomore year.

Rob said he plans to come back to Iowa the moment there's a development. He is still holding out hope that his daughter will be found safe.

"We'll still find Mollie and bring her home, and I still feel that way. We all still feel that way," he said. "That's why it's difficult for me to leave, knowing that there's a good chance we're going to bring her home, and I want to be there when she arrives."